I have a BB 9720 on contract with FULL BIS and all was fine until 1 year into the contract when I began experiencing a download/upload problem of media files. I have been to the repair center on numerous occasions (minimum 5 times) and they even changed my phone with a refurbished phone, did software upgrade, etc. but to no avail. Out of desperation, I even did a SIM swap and purchased a new memory card. On every occasion after picking up my phone from the repair shop, the same problem repeated itself after a couple of days. So for the past 3-4 months I decided to monitor the problem and what I have noticed now is that the download/upload is fine in the beginning of the month and progressively deteriorates to extremely bad after like 15th of the month. Will it be possible for you to explain why this is so because its like "throttling" as the month progresses in spite of having FULL BIS.